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Our passion: aerosols.

Since 1991, technology-oriented particle, analysis and sensor systems have been developed, designed and manufactured under the name Topas. Discover many exciting stories and previously unknown anecdotes from the 30-year company history in the anniversary year 2022/23. 

PART 3: Mineral meets technology

PART 2: Topas founder answer questions

PART 1: Curious facts & figures from 30 years Topas


A full production hall at Topas

As a positive signal we are happy to state that we are working intensively on test systems for our customers in Europe, America and Asia, such as the…

New calibration needs for particle counting instruments

In the near future engine exhaust measurements will switch to particle counting methodologies. This request will be implemented at the upcoming EURO 7…

International Distributor Webinar on exhaust sensor calibration

From more than 17 countries Topas partners have participated at the todays second Topas Webinar. The most exciting issue was about exhaust emission…



Clausthaler Kurs



Athen, Greece


World Filtration Congress

San Diego, USA

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Since 1999, the quality management of Topas GmbH has been successfully certified according to DIN EN ISO 9001.



Children become experts: Topas explains the world of aerosols

Our enthusiasm belongs to aerosols and everything that has to do with it. We told the pupils of a Dresden primary school about our passion. In four exciting research lessons, the enthusiasm for aerosols was quite noticeable in the classroom. What exactly is an aerosol? What shapes and sizes can be found? And in accordance with the current situation: How many viruses on top of each other add up to a Lego man? The children of class 2b approached these captivating questions playfully: with the help of the overhead projector, dust became visible in the classroom. Exciting experiments with the particle counter, various fabric samples and the much sought-after fog generator visualised the effects of masks and proper ventilation. And in the school playground, the children themselves became particles. In the end, everyone agreed: Aerosols are part of our lives - they just must not become too much. And when dangerous viruses are involved, proper ventilation and the right face mask can help. We couldn't have imagined better praise than Merten's sentence at the end of the research class: "That was the craziest lesson for a long time!” Same for us, Merten!